@wprelief – Thanks. I disabled all my plugins and it didn’t help. (I only have two anyway) I also updated to a new WP recommended theme since mine we old, but that didn’t help either. Still looking for a solution if anyone comes up with one.
I have the same error. I get the 404 error when using the preview at the top of the page and I get a comments closed error when using the preview at the right side of the page. I don’t have any plug-ins. I also can’t save drafts.